[turbinedoctor]

I belive the fire extingusers now have an expiration date on them and the Coast Guard will frown if they find one on your boat.

To add to Airslots shaking method, if the powder is stuck in the bottom and wont moved, Take a rubber mallet and rap the sides while holding it upside down. Learned this when our extingisher guy came around for our annual maintenance.

Heres another good tip and use for the old replaced extingushers. Take your wife and kids out in the yard and teach them the PASS method of extingusher use. "P" pull, "A" aim at the base, "S" squeeze, "S" sweep back and forth.

This give them the real feel of what to expect. You can even start and small controlled fire and let them pratice putting it out.